CVE-2021-30027

PoC —

CVSS 3.1

5.5 medium

EPSS

<1%p51

Published

Apr 29, 2021 (Apr 29, 2021)

Modified

Jun 17, 2026

Description

md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.

Vendors: md4c project
Products: md4c
Weakness: CWE-908
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.7%)

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